EF1 tornado in Ogle County, Illinois

The tornado touched down about 3 miles southwest of Davis Junction. It then went on to track trough the Davis Junction town center where it did mostly minor, EF-0 damage. EF-1 damage was done to a single family home on the north side of town. This tornado then crossed into Winnebago County south of Rockford, and eventually on into Boone County where it would later cause the partial roof collapse of the Apollo Theatre in Belvidere resulting in one fatality and 40 injuries.

During the afternoon and evening of the 31st, a wave of severe thunderstorms produced numerous tornadoes, severe hail, extensive wind damage, and localized flooding across northern and northeastern Illinois. A total of 37 tornadoes were confirmed across the state. The NWS Chicago office tied a record for the most tornadoes to occur in a single calendar day within the office's county warning area with 22, 17 of which occurred in Illinois. One EF-2 tornado occurred in south-central Lee County and two others in northwest Indiana. Some of the more notable damage includes multiple semi trucks blown over, a garage that had been completely destroyed southeast of Amboy, and the partial roof collapse of the Apollo Theatre in Belvidere which unfortunately resulted in one fatality and 40 injuries.